AGL and multisample AntiAliasing under X

I'm trying to do fullscreen antialiasing using multisample. So the question is: is it enough to ask AGL for a multisample buffer with, say, a 4x samples? It seems to work on my radeon video card, but I wonder if this is the general method I should follow with every video card...

Yes, the MULTISAMPLE_ARB should be enabled (strange enough, on my gfx card it works even if I don't enable it explicitly...)

And about 2x, 4x, 8x etc. How can I figure out what are the gfx board capabilities? Should I try all the different configurations until I find one that works (quite weird...)? Or is it some way to ask AGL?

Quote:Originally posted by oxenos Yes, the MULTISAMPLE_ARB should be enabled (strange enough, on my gfx card it works even if I don't enable it explicitly...)

I'd consider that a bug. Have you filed a bug report with Apple?

Quote:And about 2x, 4x, 8x etc. How can I figure out what are the gfx board capabilities? Should I try all the different configurations until I find one that works (quite weird...)? Or is it some way to ask AGL?

Um, I don't know, but I remember this was discussed on the mac-opengl mailing list when the extension first became available. You can probably find Apple's answer by searching the archives...